12/06/2025
Partial closures are coming to Red Mountain Pass on Saturday, Dec. 6, and Tuesday, Dec. 9, Here is the release:
Southwest Colorado — US Highway 550 Red Mountain Pass between Silverton and Ouray will close to travel on Saturday, Dec. 6 and Tuesday, Dec. 9 while the Colorado Department of Transportation performs safety-critical winter maintenance operations. Saturday morning's operations are anticipated to have minor traffic impacts with delays beginning at 8 a.m. between Mile Points 80 and 81. Tuesday's favorable weather forecast will allow for maintenance crews to perform more extensive operations along the southern summit of Red Mountain Pass (MP 75 to 79). On Dec. 9 at 10 a.m., US 550 will fully close in both directions and motorists will be stopped for approximately four hours. Motorists should plan ahead, allow for extra travel time, or arrive and drive through the closure points before the designated closure times.
Parking and recreating is prohibited between the closure points during winter maintenance operations. Backcountry users must move their vehicles and vacate the area before the scheduled closure times.
Travelers should also be aware that during the winter season, snow conditions may require additional maintenance work and safety closures at any time on many southwest Colorado highways. Visit www.COtrip.org for the most current closure times and traffic impacts.
Closure Schedule | Saturday, Dec. 6 at 8 a.m.
Lengthy delays on US 550 Red Mountain Pass will begin at 8 a.m. on Saturday morning.
Northbound travelers will encounter a closure approximately 10 miles north of Silverton (Mile Point 80.9)
Southbound travelers will encounter a closure approximately 12 miles south of Ouray (Mile Point 81.5)
Motorists will encounter lengthy delays up to 40 minutes for much of the morning
Closure Schedule | Tuesday, Dec. 9 at 10 a.m.
US 550 Red Mountain Pass closure begins Tuesday, Dec. 9 at 10 a.m. and is estimated to open by 2 p.m., depending on successful operations.
Northbound travelers will encounter a closure approximately five miles north of Silverton near Ophir Pass Road (Mile Point 75.2)
Southbound travelers will encounter a closure approximately fourteen miles south of Ouray between Ironton and Chattanooga Mine (Mile Point 79.2)
Do not attempt to bypass the closure gates
Motorists may consider an alternate route via CO 145 through Lizard Head Pass. This westerly route will add approximately one hour of additional driving time, taking approximately three hours to travel between Durango and Ridgway (approximately 150 miles).
US 160 Durango to Mancos
CO 184 Mancos to Dolores
CO 145 Dolores to Placerville
CO 62 Placerville to Ridgway